220807914664 has 8 divisors (see below), whose sum is σ = 414014840010. Its totient is φ = 110403957328.

The previous prime is 220807914641. The next prime is 220807914673. The reversal of 220807914664 is 466419708022.

It can be written as a sum of positive squares in only one way, i.e., 191135096100 + 29672818564 = 437190^2 + 172258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×220807914664² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13800494659 + ... + 13800494674.

Almost surely, 2^220807914664 is an apocalyptic number.

It is an amenable number.

220807914664 is a deficient number, since it is larger than the sum of its proper divisors (193206925346).

220807914664 is a wasteful number, since it uses less digits than its factorization.

220807914664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27600989339 (or 27600989335 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 220807914664 in words is "two hundred twenty billion, eight hundred seven million, nine hundred fourteen thousand, six hundred sixty-four".